K Use the shell method to find the volume of the solid generated by revolving the shaded region about the y-axis. 10-y =21x7 +1 x - 124 2 X 24 The volume is (Type an exact answer, using it as needed.)Save Use the shell method to find the volume of the solid generated by revolving the regions bounded by the curves and K lines about the y-axis y = x, y= 10 - 9x, x=0, for x20 The volume is (Type an exact answer in terms of It.)Save K Use the shell method to find the volume of the solid generated by revolving the region bounded by y = 8x - 7, y = \\x, and x = 0 about the y-axis. The volume is cubic units (Type an exact answer, using it as needed.)K sin x sin X Let f(X) = X V= d X X=0 X=0 a. Show that xf(x) = sin x, OsX= 1. b. Find the volume of the solid generated by revolving the shaded region about the y-axis in the X accompanying figure. a. Which of the following choices correctly shows that xf(x) = sin x, 0=x= n? OA. sin x sin x For O x x, the expression is defined and so xf(x) = x = sin x. X X OB. sin x sin X For 0